Calling Frank Sinatra the great love of her life, Mia Farrow revealed that her son Ronan Farrow may have been fathered by the legendary singer and not director Woody Allen.

Farrow, 68, told Vanity Fair's November issue that Sinatra is "possibly" the father of Ronan, 25, but says no paternity tests were ever done. Ronan, a former Rhodes scholar and special adviser to the State Department under Hillary Clinton, was long believed to be Woody Allen's son. He was originally named Satchel, but now goes by Ronan.

Commenting on the story on Twitter, Ronan wrote, "Listen, we're all *possibly* Frank Sinatra's son."

Now Farrow, who was married to Sinatra for 18 months when she was 21 and he was 50, has admitted that she was still involved with the singer even during her longtime relationship with Allen.

"We never really split up," Farrow told Vanity Fair.

Sinatra died in 1998 at age 82. The singer's daughter, Nancy Sinatra Jr., when asked about the family's relationship with Ronan, told the magazine in an email, "He is a big part of us, and we are blessed to have him in our lives."

After the breakup of her marriage to Sinatra, Farrow went on to marry German-Austrian pianist Andre Previn. The couple adopted three children and had three biological children before divorcing in 1979.

A year later, Farrow began a long-term relationship with Woody Allen, though the two never lived together. Farrow starred in 13 of his films, including "Hannah And Her Sisters." The couple adopted two children and Ronan was born in 1987.

The couple famously split in 1992, when Farrow discovered the director was having an affair with her oldest adopted daughter, Soon-Yi Previn, then 22. A messy custody battle for Allen and Farrow's three children ensued, during which Farrow accused Allen of sexually abusing Ronan's sister Dylan. A judge dismissed the abuse claims and Allen, through his attorney, continues to deny the allegations, according to Vanity Fair.

Allen subsequently married Soon-Yi Previn in 1997 and they have two adopted daughters.

Speaking for the first time since the scandal broke, Dylan, who now goes by another name, told Vanity Fair that she never says her father's name. "I'm scared of him, his image," she said, adding, "I have never been asked to testify. If I could talk to the 7-year-old Dylan, I would tell her to be brave, to testify."

Allen's rep told ABC News, "The article is so fictitious and extravagantly absurd that he is not going to comment."